EP1261998B1 - Retroviseur de vehicule dote d'une antenne integree - Google Patents

Retroviseur de vehicule dote d'une antenne integree Download PDF

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Publication number
EP1261998B1
EP1261998B1 EP01911389A EP01911389A EP1261998B1 EP 1261998 B1 EP1261998 B1 EP 1261998B1 EP 01911389 A EP01911389 A EP 01911389A EP 01911389 A EP01911389 A EP 01911389A EP 1261998 B1 EP1261998 B1 EP 1261998B1
Authority
EP
European Patent Office
Prior art keywords
antenna
mirror
bracket
metallic
segments
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01911389A
Other languages
German (de)
English (en)
Other versions
EP1261998A1 (fr
Inventor
Ralf Schultze
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1261998A1 publication Critical patent/EP1261998A1/fr
Application granted granted Critical
Publication of EP1261998B1 publication Critical patent/EP1261998B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
    • H01Q1/3266—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle using the mirror of the vehicle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • H01Q1/425—Housings not intimately mechanically associated with radiating elements, e.g. radome comprising a metallic grid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
    • H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/40—Element having extended radiating surface
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/12—Mirror assemblies combined with other articles, e.g. clocks
    • B60R2001/1261—Mirror assemblies combined with other articles, e.g. clocks with antennae

Definitions

  • the invention relates to the arrangement of an antenna in an exterior mirror of a motor vehicle according to the preamble of claim 1.
  • GSM Global System for Mobile Communications
  • a flat type antenna mounted on a vehicle is known.
  • a metallic antenna bracket is disposed there opposite a ground plane designed as an electrical counterweight, the antenna bracket being connected on one side to the ground plane and on the other side to the antenna signal.
  • the antenna bracket forms a surface and is designed as a halfloop antenna.
  • DE-A-3 627 193 shows a ring antenna consisting of two rings offset by 90 °, which is integrated into the vehicle exterior mirror.
  • DE-A-4 003 057 shows the segmentation of the mirror metallization in order to render it permeable to microwaves.
  • WO-A1-96 / 29755 describes a GSM vehicle antenna, which is preferably incorporated in the vehicle's rearview mirror or in an exterior mirror, using as antenna a modified dipole antenna.
  • the integration of a dipole on the side surface of the plastic cover of a On the one hand, however, the outside antenna does not lead to a satisfactory result because of the proximity of the dipole to the metallic carrier of the mirror motors and to the metallic mirror layer of the mirror glass.
  • the invention has for its object to develop an antenna assembly with an integrated in a vehicle outside mirror antenna, which is used for mobile communications to GSM.
  • a flat horizontal radiation characteristic with vertical polarization is desired.
  • An exterior mirror of a motor vehicle has a support on which the motors are mounted for movement of the rearview mirror.
  • the carrier is made of a metallic material, preferably aluminum.
  • an antenna structure of flat design is arranged in the intermediate space, which has a so-called ground plane, referred to below as the ground plane, and an antenna bracket arranged above the ground plane.
  • This ground plane serves as an electric counterweight to the antenna bracket arranged above it.
  • the antenna bracket is connected on one side to the ground plane and on the other side to the antenna signal, wherein the antenna bracket preferably forms a surface.
  • a halfloop antenna is considered as an antenna.
  • the conditional by the motors carrier is used in a preferred embodiment as the ground plane of the antenna flat design. If the carrier is made of metal, as is generally the case, it can be used directly as the ground plane of the antenna. However, if the carrier from a non-metallic material, such as a plastic material, or an electrically or electromagnetically poorly conductive material, for example, the support surface used as the ground plane must be metallized, ie coated with an electrically conductive layer, or it must be introduced an additional electrically conductive part as a ground plane.
  • Metallic parts located in the radiant area of the antenna affect the beam characteristics of the antenna.
  • the parts located in a vehicle exterior mirror such as motors or cables, act on the antenna arranged in a rearview mirror.
  • the carrier also serves as a shield
  • the antenna of flat design can be arranged in front of, above, beside, behind or below the support arranged in the outside mirror.
  • a position above the carrier is preferred because the shading by the body of the motor vehicle in this position is the lowest, since the antenna in this increased installation position sweeps over the closed metallic surfaces of the body. It should be noted, however, that the antenna does not radiate against the mirror glass. In other words, the antenna must be placed in an elevated position above the mirror glass, which may u. a redesign of the housing of the exterior mirror conditionally. Then, a circular radiation pattern of the antenna can be realized in such a location without large burglaries.
  • the antenna effectively radiates against the mirror glass.
  • the mirror glass negatively affects the radiation property of the antenna due to the metallic, low-resistance layer of the mirror glass.
  • This metallic layer causes shading of the electromagnetic waves radiated or received by the antenna in the azimuthal radiation pattern of the antenna.
  • a decoupling of the mirror glass is achieved by the antenna, in which the mirror glass is divided into segments isolated from each other, so that the low-resistance reflective layer of the mirror glass is permeable to the high-frequency antenna radiation.
  • the segments near the antenna are smaller than segments removed from the antenna.
  • the segments may be dissimilar in their planar shape.
  • the subdivision of the mirror glass into segments is effected by a grid structure, whereby the segments are similar to each other.
  • the grid structure can be regular or irregular. With an irregular grid structure, the grid line spacing increases with increasing distance to the antenna.
  • the antenna is used in the GSM frequency domain.
  • use of the antenna arrangement in other frequency ranges, such as the E-network or other services, are also possible.
  • FIG. 1 shows the example of a half-loop antenna integrated into an exterior mirror (not shown), consisting of a generally planar metallic antenna bracket 1, which is arranged above a ground plane 2.
  • This ground plane 2 is preferably formed by the metallic or metallized carrier of the motors of the mirror glass.
  • the antenna signal is fed, while at point 4 of the antenna bracket 1, the ground plane 2 contacted.
  • the area 5 of the antenna bracket 2 delimited by the edge 6 has the form of a tapering ellipse in the development.
  • Other shapes of the surface of the antenna bracket are possible and depend on the spatial conditions of the installation between the carrier and the exterior mirror housing (not shown).
  • Fig. 2 shows in schematic form a view of the mirror glass 10 of an exterior mirror 11 with a housing 12 and a holder 13.
  • the low-resistance metallic layer of the mirror glass 10 which causes the reflection of the light rays, by a grid structure with grid lines 14 in electrically isolated from each other Segments 15 divided.
  • the spacing of the grid lines 14 need not be equidistant, as shown schematically in FIG.
  • Fig. 3 shows the directional diagram of a left outside mirror with integrated antenna flat design.
  • the left exterior HYLED attached to a sedan 20.
  • the illustrated Measurement shows a substantially circular radiation pattern with burglaries, which are due to the shape of the motor vehicle, for example, the proximity of the exterior mirror to the A-pillar of the sedan.

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
  • Waveguide Aerials (AREA)
  • Aerials With Secondary Devices (AREA)

Claims (10)

  1. Installation d'antenne avec une antenne disposée dans un rétroviseur extérieur (11) d'un véhicule, l'antenne ayant une structure plate, comprenant un arceau d'antenne métallique (1), disposé en face d'un plan de base (2) conçu comme contrepoids électrique, l'arceau d'antenne (1) étant relié d'un côté (4) au plan de base et de l'autre côté (3) au signal d'antenne,
    caractérisée en ce que
    le miroir (10) du rétroviseur extérieur (11) est divisé en segments (15) isolés les uns des autres, de telle façon que la couche réfléchissante à faible résistance du miroir (10) laisse passer le rayonnement à haute fréquence de l'antenne et les segments (15) proches de l'antenne sont plus petits que ceux qui en sont éloignés.
  2. Installation selon la revendication 1,
    caractérisée en ce que
    l'arceau d'antenne (1) forme une surface (5).
  3. Antenne selon la revendication 1 ou 2,
    caractérisé en ce que
    l'antenne est une antenne demi-boucle.
  4. Antenne selon l'une des revendications 1 à 3,
    caractérisée en ce que
    le rétroviseur de véhicule comprend un support métallique pour le montage des moteurs du miroir, servant de plan de base (2) pour l'antenne.
  5. Antenne selon la revendication 4,
    caractérisée en ce que
    l'arceau d'antenne (1) est disposé au-dessus du support.
  6. Antenne selon la revendication 5,
    caractérisé en ce que
    l'antenne est disposée dans l'espace intermédiaire entre le support métallique et le boîtier en plastique (12) du rétroviseur extérieur (11) du véhicule.
  7. Antenne selon la revendication 1,
    caractérisée en ce que
    la subdivision du miroir (10) est réalisée par une structure de réseau avec des lignes de réseau (14).
  8. Antenne selon la revendication 7,
    caractérisée en ce que
    la structure de réseau est régulière.
  9. Antenne selon la revendication 7,
    caractérisée en ce que
    la structure de réseau est irrégulière.
  10. Antenne selon la revendication 9,
    caractérisée en ce que
    l'espacement des lignes de réseau (14) augmente selon l'augmentation de l'éloignement par rapport à l'antenne.
EP01911389A 2000-02-09 2001-01-25 Retroviseur de vehicule dote d'une antenne integree Expired - Lifetime EP1261998B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10005567 2000-02-09
DE10005567A DE10005567C2 (de) 2000-02-09 2000-02-09 Fahrzeugaußenspiegel mit integrierter Antenne
PCT/DE2001/000289 WO2001059878A1 (fr) 2000-02-09 2001-01-25 Retroviseur de vehicule dote d'une antenne integree

Publications (2)

Publication Number Publication Date
EP1261998A1 EP1261998A1 (fr) 2002-12-04
EP1261998B1 true EP1261998B1 (fr) 2007-04-11

Family

ID=7630248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01911389A Expired - Lifetime EP1261998B1 (fr) 2000-02-09 2001-01-25 Retroviseur de vehicule dote d'une antenne integree

Country Status (7)

Country Link
US (1) US20030162524A1 (fr)
EP (1) EP1261998B1 (fr)
JP (1) JP2003522667A (fr)
KR (1) KR20020087050A (fr)
CN (1) CN1398442A (fr)
DE (2) DE10005567C2 (fr)
WO (1) WO2001059878A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004073112A1 (fr) * 2003-02-14 2004-08-26 Huber + Suhner Ag Antenne monopolaire large bande
JP4975975B2 (ja) * 2005-03-24 2012-07-11 株式会社東海理化電機製作所 車両用ドアミラー装置
EP1705064B1 (fr) * 2005-03-24 2008-02-13 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Rétroviseur extérieur de véhicule
TWI255069B (en) * 2005-05-05 2006-05-11 Accton Technology Corp Antenna structure
JP4755461B2 (ja) * 2005-07-29 2011-08-24 株式会社村上開明堂 アンテナ付きミラー装置
DE102007058247A1 (de) 2007-12-04 2009-06-10 Robert Bosch Gmbh Antennenordnung für ein Kraftfahrzeug sowie Verfahren
JP5317788B2 (ja) * 2009-03-26 2013-10-16 三菱電機株式会社 アンテナ装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4003057A1 (de) * 1990-02-02 1991-08-08 Telefunken Systemtechnik Radarsensor zur totwinkelueberwachung bei einem kraftfahrzeug
EP0444679A2 (fr) * 1990-03-01 1991-09-04 Kabushiki Kaisha Toyota Chuo Kenkyusho Antenne mobile

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3165749A (en) * 1958-09-15 1965-01-12 Thompson Ramo Wooldridge Inc Microwave transmissive optical radiation reflectors
US3015101A (en) * 1958-10-31 1961-12-26 Edwin M Turner Scimitar antenna
JPH0638562B2 (ja) * 1985-08-12 1994-05-18 日産自動車株式会社 車両用アンテナ
US4958167A (en) * 1987-09-16 1990-09-18 Schroeder Klaus G Ultra-broadband impedance matched electrically small complementary signal radiating structures using thin wire elements and an impedance optimizing feed circuit
WO1996029755A1 (fr) * 1995-03-17 1996-09-26 Elden, Inc. Antenne montee a l'interieur d'un vehicule
JPH09246827A (ja) * 1996-03-01 1997-09-19 Toyota Motor Corp 車両用アンテナ装置
US6078294A (en) * 1996-03-01 2000-06-20 Toyota Jidosha Kabushiki Kaisha Antenna device for vehicles
DE29811147U1 (de) * 1998-06-25 1998-11-12 FUBA Automotive GmbH, 31162 Bad Salzdetfurth Antennen aus flächigen Elementen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4003057A1 (de) * 1990-02-02 1991-08-08 Telefunken Systemtechnik Radarsensor zur totwinkelueberwachung bei einem kraftfahrzeug
EP0444679A2 (fr) * 1990-03-01 1991-09-04 Kabushiki Kaisha Toyota Chuo Kenkyusho Antenne mobile

Also Published As

Publication number Publication date
JP2003522667A (ja) 2003-07-29
WO2001059878A1 (fr) 2001-08-16
CN1398442A (zh) 2003-02-19
KR20020087050A (ko) 2002-11-21
EP1261998A1 (fr) 2002-12-04
DE10005567C2 (de) 2001-12-06
US20030162524A1 (en) 2003-08-28
DE10005567A1 (de) 2001-08-30
DE50112333D1 (de) 2007-05-24

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